We have fairly New Guinea pigs, so still finding the way a bit. They love, love being in the outdoor run, but as weather is still pretty cold & wet this can be limited.
I’d wondered about buying a roll of turf/grass from b&q or somewhere and putting it in the ground floor of their hutch, but I’m not sure if it will be covered in pesticides. Or if it’s otherwise a terrible idea. I have grown some grass in a flat container which they enjoyed.